Use a higher quality headset with your smartphone, iPhone, or tablet Convert standard 2.5mm phone headset plug to 3.5mm TRRS plug Use your phone headset with iPhone, Android, Blackberry, PS4,...

Convert 2.5mm headset plug to single 4P4C RJ9/RJ10 plug for your VOIP phone Compatible with most IP phone headset jacks: Nortel, Avaya, Aastra, ESI, NEC, RCA, Mitel, Lucent, Shoretel,...

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Adapts phones with a 2.5mm headset jack to either your corded headset amplifier jack, or to your wireless base station Easy to use and install Simple to use with most devices,...

Convert 3.5mm Smartphone plug to single 4P4C RJ9/RJ10 handset plug. Save money by buying a smartphone headset, or using your existing one with your Aastra phone's handset jack. Reduce clutter...

3.5mm Female to 2.5mm Male Headset Adapter Convert 3.5mm smartphone, Android, Blackberry, or iPhone headset plug to standard 2.5mm plug Use your iPhone or smartphone headset with any 2.5mm home,...

Use your 3.5mm headset with almost any office phone - 8 settings cover most phone models including Cisco Combines the PH35-RJ9A of the PH35-RJ9Cisco adapters! Works great with...

Adapts phones with a 3.5mm headset jack to either your corded headset amplifier jack, or to your wireless base station Easy to use and install Simple to use with most devices,...

Dual control with 2 mute buttons Dual volume control Listen-in only or train/take over call Works with wired or wireless headsets or a mix Use with Agent, Plantronics, Jabra and Sennheiser...

The CTA-100 headset amplifier is compatible with almost all telephone systems / brands. Amplifier function, output and input volume can maintain high, clear and resonant level. Three (3)...

Use a standard batteryless electret condenser mic (ECM) such as lavalier, PC, or headset mic, with your smartphone or tablet Not for use with mics that require batteries Works with most...

No more reaching under or to the back of your office phone to plug in a headset Great for hot desking where headsets are switched out often Works with all direct connect headset models including...